石油与天然气地质 ›› 1991, Vol. 12 ›› Issue (1): 10-21.doi: 10.11743/ogg19910102

• 论文 • 上一篇    下一篇

周口坳陷构造特征与油气远景

王定一1, 刘池洋1, 张国伟1, 马金钰2, 余梦珍2, 张鸿奎2   

  1. 1. 西北大学, 西安;
    2. 河南石油勘探局, 南阳
  • 收稿日期:1990-03-10 修回日期:1990-06-08 出版日期:1991-03-25 发布日期:2012-01-16

STRUCTURAL FEATURE AND HYDROCARBON POTENTIAL OF ZHOUKOU DEPRESSION

Wang Dingyi1, Liu Chiyang1, Zhang Guowei1, Ma Jinyu2, Yu Mengzhen2, Zhang Hongkui2   

  1. 1. Department of Geology, Northwest University;
    2. Bureau of Petroleum Exploration, Henan
  • Received:1990-03-10 Revised:1990-06-08 Online:1991-03-25 Published:2012-01-16

PDF (PC)

637

被引次数

43

摘要：

这是一个横跨在华北地块与华北地块南缘构造带上的中新生代断坳型坳陷。中生代坳陷的形成与华北板块和扬子板块陆-陆碰撞引起的陆内火山活动及A型俯冲作用有关。新生代张剪性弧形断陷的形成是郯庐断裂系右行剪切平移运动和该区北西西向断裂左行剪切平移运动联合作用的结果。中部凹陷带是当前有利的油气勘探地区;对南部凹陷带的中生界和北部凹陷带的下古生界应加强工作。

关键词: 周口坳陷, 构造演化, 含油气盆地, 华北地块, 秦岭—大别造山带, 郯庐断裂, 剪切平移, 油气资源评价

Abstract:

Zhoukou Depression that crosses the two different tectonic units of North China massif and the southern marginal structural belt of the North China massif is the biggest depression covering an area of 32000km2 in the south part of North China Basin. In the Mesozoic, NWW-trend tensile and compressive sags that filled with rapid accumulated volcanic-clastic rocks and oil-bearing molass formations developed in Runan, TanzhuangShengqiu regions due to intracontinental volcanic activities and A-type subduction caused by continent-continent collision of North China Plate and Yangzhi Plate. In the Eogene, an arc-shaped tectonic framework protruding to south as a whole in the depression was controlled by tensile-wrench stress field. It contuins 2 uplifts alternated with 3 sags, including North part sag zone, Linying-Dancheng uplift zone, Central sag zone, PingyuTaihe uplift zone and South part sag zone from north to south. Each of the sag zones ismade up of several dustpan-shaped sags. It formed a group of dustpan-shaped sags with multi-depocenter and multi-hydrocarbon generation center. The tensile-wrench arc-shaped tectonic system resulted from combined acting of dextral shear-wrench movement of Xiayi-Woyang-Macheng fault in Tanlou fault zone with sinistral shear-wrench movement of NWW trend fault in this region. Comprehensive studies indicate that the Central sag zone is favourable for hydrocarbon exploration in the future. The Mesozoic System in the South sag zone and the Lower Paleozoic System in the North sag zone are prospective, and worthy to be further studied.